DEFEO RONALD M

Director at TERRATHERM CO · on record since Mar 24, 2006
Director at KENNAMETAL INC · on record since Jul 26, 2006
Chairman, President & CEO at TERRATHERM CO · on record since May 10, 2004
Director at UNITED RENTALS, INC. · on record since Sep 25, 2003
Director at MYERS INDUSTRIES INC · on record since Apr 24, 2026
Former Chairman and CEO at TERRATHERM CO · on record since Feb 26, 2016
Executive Chairman at KENNAMETAL INC · on record since Feb 5, 2018

Insider trading activity of DEFEO RONALD M

Transactions on record: 1,009; since Jul 30, 2003

Open-market buys: 230; $1.7M

Open-market sells: 44; $45.7M

Companies traded: 5; last filing May 11, 2026

Figures computed from official regulatory filings — .

Companies where DEFEO RONALD M has traded

MYERS INDUSTRIES INC22 tx · $663.6K · May 11, 2026
KENNAMETAL INC127 tx · $8.5M · Aug 30, 2018
TEREX CORP852 tx · $86.3M · Mar 11, 2016
UNITED RENTALS, INC.6 tx · $61K · Mar 4, 2005
TERRATHERM CO2 tx · $859.7K · May 6, 2004

Track record of DEFEO RONALD M

Statistical track record

Free account

Open-market buys: 230

Last buy: Mar 15, 2022

Win rates, median returns and the proven-insider analysis come with a free account.

Transaction history of DEFEO RONALD M

Co-insiders of DEFEO RONALD M

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
MYERS INDUSTRIES INCListing on record	May 11, 2026	Award	5,135	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MYERS INDUSTRIES INCListing on record	Apr 24, 2026	Other	-6,250	—	n/a (No price was disclosed in the filing)		SEC
MYERS INDUSTRIES INCListing on record	Apr 24, 2026	AwardD (derivative)	6,250	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MYERS INDUSTRIES INCListing on record	May 7, 2025	Award	6,250	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MYERS INDUSTRIES INCListing on record	May 13, 2024	Award	4,534	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MYERS INDUSTRIES INCListing on record	Apr 28, 2023	Award	5,294	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MYERS INDUSTRIES INCListing on record	May 2, 2022	AwardD (derivative)	4,023	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MYERS INDUSTRIES INCListing on record	May 2, 2022	Other	-4,023	—	n/a (No price was disclosed in the filing)		SEC
MYERS INDUSTRIES INCListing on record	May 2, 2022	Award	4,110	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MYERS INDUSTRIES INCListing on record	Mar 17, 2022	Buy	10,000	18.49 USD	$184.9K	conv 56Cluster	SEC
MYERS INDUSTRIES INCListing on record	May 3, 2021	Award	4,023	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MYERS INDUSTRIES INCListing on record	Mar 17, 2021	Buy	10,000	19.80 USD	$198K	conv 60ClusterUnusual size	SEC
MYERS INDUSTRIES INCListing on record	May 12, 2020	Buy	4,500	12.07 USD	$54.3K	conv 45Cluster	SEC
MYERS INDUSTRIES INCListing on record	May 12, 2020	Buy	5,500	11.61 USD	$63.9K	conv 46Cluster	SEC
MYERS INDUSTRIES INCListing on record	May 1, 2020	Other	-4,144	—	n/a (No price was disclosed in the filing)		SEC
MYERS INDUSTRIES INCListing on record	May 1, 2020	Award	5,850	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MYERS INDUSTRIES INCListing on record	May 1, 2020	AwardD (derivative)	4,144	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MYERS INDUSTRIES INCListing on record	Nov 19, 2019	Buy	10,000	16.25 USD	$162.5K	conv 74Unusual sizeFirst in 12mo	SEC
MYERS INDUSTRIES INCListing on record	Apr 26, 2019	Other	-2,574	—	n/a (No price was disclosed in the filing)		SEC
MYERS INDUSTRIES INCListing on record	Apr 26, 2019	AwardD (derivative)	2,574	—	n/a (No price was disclosed in the filing)		SEC
MYERS INDUSTRIES INCListing on record	Apr 26, 2019	Award	4,144	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
KENNAMETAL INCListing on record	Aug 30, 2018	Exercise	503	40.97 USD	$20.6K		SEC
KENNAMETAL INCListing on record	Aug 23, 2018	Exercise	7,000	26.89 USD	$188.2K		SEC
KENNAMETAL INCListing on record	Aug 23, 2018	ExerciseD (derivative)	-7,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
KENNAMETAL INCListing on record	Aug 23, 2018	Exercise	7,000	21.48 USD	$150.4K		SEC

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
MYERS INDUSTRIES INCListing on record	May 11, 2026	Award	5,135	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MYERS INDUSTRIES INCListing on record	Apr 24, 2026	Other	-6,250	—	n/a (No price was disclosed in the filing)		SEC
MYERS INDUSTRIES INCListing on record	Apr 24, 2026	AwardD (derivative)	6,250	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MYERS INDUSTRIES INCListing on record	May 7, 2025	Award	6,250	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MYERS INDUSTRIES INCListing on record	May 13, 2024	Award	4,534	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MYERS INDUSTRIES INCListing on record	Apr 28, 2023	Award	5,294	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MYERS INDUSTRIES INCListing on record	May 2, 2022	AwardD (derivative)	4,023	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MYERS INDUSTRIES INCListing on record	May 2, 2022	Other	-4,023	—	n/a (No price was disclosed in the filing)		SEC
MYERS INDUSTRIES INCListing on record	May 2, 2022	Award	4,110	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MYERS INDUSTRIES INCListing on record	Mar 17, 2022	Buy	10,000	18.49 USD	$184.9K	conv 56Cluster	SEC
MYERS INDUSTRIES INCListing on record	May 3, 2021	Award	4,023	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MYERS INDUSTRIES INCListing on record	Mar 17, 2021	Buy	10,000	19.80 USD	$198K	conv 60ClusterUnusual size	SEC
MYERS INDUSTRIES INCListing on record	May 12, 2020	Buy	4,500	12.07 USD	$54.3K	conv 45Cluster	SEC
MYERS INDUSTRIES INCListing on record	May 12, 2020	Buy	5,500	11.61 USD	$63.9K	conv 46Cluster	SEC
MYERS INDUSTRIES INCListing on record	May 1, 2020	Other	-4,144	—	n/a (No price was disclosed in the filing)		SEC
MYERS INDUSTRIES INCListing on record	May 1, 2020	Award	5,850	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MYERS INDUSTRIES INCListing on record	May 1, 2020	AwardD (derivative)	4,144	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MYERS INDUSTRIES INCListing on record	Nov 19, 2019	Buy	10,000	16.25 USD	$162.5K	conv 74Unusual sizeFirst in 12mo	SEC
MYERS INDUSTRIES INCListing on record	Apr 26, 2019	Other	-2,574	—	n/a (No price was disclosed in the filing)		SEC
MYERS INDUSTRIES INCListing on record	Apr 26, 2019	AwardD (derivative)	2,574	—	n/a (No price was disclosed in the filing)		SEC
MYERS INDUSTRIES INCListing on record	Apr 26, 2019	Award	4,144	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
KENNAMETAL INCListing on record	Aug 30, 2018	Exercise	503	40.97 USD	$20.6K		SEC
KENNAMETAL INCListing on record	Aug 23, 2018	Exercise	7,000	26.89 USD	$188.2K		SEC
KENNAMETAL INCListing on record	Aug 23, 2018	ExerciseD (derivative)	-7,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
KENNAMETAL INCListing on record	Aug 23, 2018	Exercise	7,000	21.48 USD	$150.4K		SEC